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  <h1 class="topictitle1">tick_count Class Members</h1>
 
   
  <div> 
      <div class="section">
	 
<div class="tablenoborder"><table cellpadding="4" summary="" frame="border" border="1" cellspacing="0" rules="all"><span class="tabledesc">The following table provides additional information on the members
		  of this template class. 
		</span><thead align="left"> 
			 <tr> 
				<th class="cellrowborder" valign="top" width="33.89830508474576%" id="d125237e31">Member 
				</th>
 
				<th class="cellrowborder" valign="top" width="66.10169491525423%" id="d125237e34">Description 
				</th>
 
			 </tr>
</thead>
 
		  <tbody> 
			 <tr> 
				<td class="cellrowborder" valign="top" width="33.89830508474576%" headers="d125237e31 "><span class="keyword">static tick_count now()</span> 
				</td>
 
				<td class="cellrowborder" valign="top" width="66.10169491525423%" headers="d125237e34 "> 
				  <p>
                                    Current wall clock timestamp.
				  </p>
 
				</td>
 
			 </tr>
 
			 <tr> 
				<td class="cellrowborder" valign="top" width="33.89830508474576%" headers="d125237e31 "><span class="keyword">static double resolution()</span> 
				</td>
 
				<td class="cellrowborder" valign="top" width="66.10169491525423%" headers="d125237e34 "> 
				  <p>
                                     The resolution of the clock in seconds.
				  </p>
 
				</td>
 
			 </tr>
 
			 <tr> 
				<td class="cellrowborder" valign="top" width="33.89830508474576%" headers="d125237e31 "><span class="keyword">tick_count::interval_t operator-( const tick_count&amp; t1,
                                     const tick_count&amp; t0 )</span> 
				</td>
 
				<td class="cellrowborder" valign="top" width="66.10169491525423%" headers="d125237e34 "> 
				  <p>
                                     Relative time that t1 occurred after t0.
				  </p>
 
				</td>
 
			 </tr>
 
		  </tbody>
 
		</table>
</div>
 
         <div class="Note"><h3 class="NoteTipHead">
					Caution</h3> 
	        <p> 
                On Microsoft Windows* operating systems, the current implementation
                uses the function <samp class="codeph">QueryPerformanceCounter</samp>. Some 
                systems may have bugs in their basic input/output system (BIOS) or
                hardware abstraction layer (HAL) that cause different processors to
                return different time results.
		</p>
 
         </div> 
        </div>

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<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong>&nbsp;<a href="../../../reference/timing/tick_count_cls.htm">tick_count Class</a></div>
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